Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section
To reduce the risk related to water seepage during tunnel/cavern excavation, some analytical solutions for water inflow prediction corresponding to specific geological conditions have been established over the last decades. Unfortunately, these analytical solutions are only applicable for tunnels/ca...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Book Chapter |
| Language: | English |
| Published: |
CPC Press, Taylor and Francis.
2015
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| Online Access: | https://hdl.handle.net/10356/79269 http://hdl.handle.net/10220/38723 |
| _version_ | 1826119557841944576 |
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| author | Zhao, Zhiye Xu, Zhipeng Sun, Jianping |
| author2 | Wu, Faquan |
| author_facet | Wu, Faquan Zhao, Zhiye Xu, Zhipeng Sun, Jianping |
| author_sort | Zhao, Zhiye |
| collection | NTU |
| description | To reduce the risk related to water seepage during tunnel/cavern excavation, some analytical solutions for water inflow prediction corresponding to specific geological conditions have been established over the last decades. Unfortunately, these analytical solutions are only applicable for tunnels/caverns with regular cross-sections, such as circular, elliptical or square. In reality, the cross-sections for most of real tunnels/caverns are always asymmetric, such as in a horseshoe shape. Therefore, the existing analytical solutions are not very suitable for water inflow prediction. Based on the monitoring data from a deep subsea rock cavern with horseshoe-shaped cross-section, and taking the advantages of both the analytical solutions and the numerical method, this paper proposed a semi-analytical approach for determining the water inflow rate. In this paper, the two-dimensional water inflow is described by a simplified linear equation with assumptions of Darcy’s law and mass conservation. According to the monitoring data collected from the site, FLAC 2D is used to validate the correctness of the simplified linear equation, and to determine the constants in the empirical equation. Then, water flow could be estimated by the established semi-analytical solution. The approach presented in this paper offers an effective alternative to predict the water inflow rate for caverns excavated with similar hydrogeological conditions, and provides an back analysis procedure for estimating the hydraulic conductivities for rock cavern projects. |
| first_indexed | 2024-10-01T05:02:00Z |
| format | Book Chapter |
| id | ntu-10356/79269 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:02:00Z |
| publishDate | 2015 |
| publisher | CPC Press, Taylor and Francis. |
| record_format | dspace |
| spelling | ntu-10356/792692020-03-07T11:43:28Z Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section Zhao, Zhiye Xu, Zhipeng Sun, Jianping Wu, Faquan Qi, Shengwen School of Civil and Environmental Engineering To reduce the risk related to water seepage during tunnel/cavern excavation, some analytical solutions for water inflow prediction corresponding to specific geological conditions have been established over the last decades. Unfortunately, these analytical solutions are only applicable for tunnels/caverns with regular cross-sections, such as circular, elliptical or square. In reality, the cross-sections for most of real tunnels/caverns are always asymmetric, such as in a horseshoe shape. Therefore, the existing analytical solutions are not very suitable for water inflow prediction. Based on the monitoring data from a deep subsea rock cavern with horseshoe-shaped cross-section, and taking the advantages of both the analytical solutions and the numerical method, this paper proposed a semi-analytical approach for determining the water inflow rate. In this paper, the two-dimensional water inflow is described by a simplified linear equation with assumptions of Darcy’s law and mass conservation. According to the monitoring data collected from the site, FLAC 2D is used to validate the correctness of the simplified linear equation, and to determine the constants in the empirical equation. Then, water flow could be estimated by the established semi-analytical solution. The approach presented in this paper offers an effective alternative to predict the water inflow rate for caverns excavated with similar hydrogeological conditions, and provides an back analysis procedure for estimating the hydraulic conductivities for rock cavern projects. 2015-09-21T09:20:44Z 2019-12-06T13:21:16Z 2015-09-21T09:20:44Z 2019-12-06T13:21:16Z 2013 2013 Book Chapter Xu, Z., Zhao, Z., & Sun, J. (2013). Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section. Global View of Engineering Geology and the Environment. Wu, F., & Qi, S. (eds), Global View of Engineering Geology and the Environment, 345-349. 978-1-138-00078-0; 978-1-315-85659-9 https://hdl.handle.net/10356/79269 http://hdl.handle.net/10220/38723 10.1201/b15794-56 173052 en © 2013 Taylor & Francis Group. application/pdf CPC Press, Taylor and Francis. |
| spellingShingle | Zhao, Zhiye Xu, Zhipeng Sun, Jianping Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section |
| title | Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section |
| title_full | Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section |
| title_fullStr | Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section |
| title_full_unstemmed | Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section |
| title_short | Determination of water flow rate into subsea deep rock cavern with horseshoe cross-section |
| title_sort | determination of water flow rate into subsea deep rock cavern with horseshoe cross section |
| url | https://hdl.handle.net/10356/79269 http://hdl.handle.net/10220/38723 |
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